The phrase "a point in space" is correct and usable in written English.
It can be used in contexts related to physics, mathematics, or discussions about geometry and spatial relationships.
Example: "In physics, we often refer to a point in space to describe the location of an object without considering its size or shape."
Alternatives: "a location in space" or "a position in space".
So, let's say that you have a point in space at coordinates x, y, z.
One way of thinking about one particular piece of data is as a point in space.
Well, you're going to represent a point in space using the distance to the origin and two angles.
The picture appears to originate from a point in space in front of the mirror, only from a narrow perspective.
This is the idea that a point in space can only be influenced by its immediate surroundings.
In addition, during each one-second time interval, a certain number of wavelengths pass a point in space.
In 1974, in order to solve the equations of this theory numerically and gain a more precise understanding of this process, he invented a digitized version of the theory called lattice gauge theory, in which space is imagined as a kind of finely resolved jungle gym where every intersection of the bars represents a point in space-time.
Or, by staying close to such a CTC, one could come arbitrarily close to a point in space-time that one previously visited.
Leaving aside demographic and individual traits for the purposes of this expositiona, we reason that interpretation of weather conditions is grounded in a person's expectations of that weather at a point in space-time.
If there were time-like curves which were closed (formed a loop), then travelling along such a curve one would never exceed the speed of light, and yet after a certain amount of (proper) time one would return to a point in space-time that one previously visited.
Those three measures define a three-dimensional space, and any particular combination of them defines a point in that space.
